JP5186840B2 - Air compressor and notification control method - Google Patents

Description

  The present invention relates to an air compressor and a notification control method, and more particularly to an air compressor provided with a notification unit and a notification control method for the notification unit.

When a driving tool such as a nailing machine using compressed air is used at a construction site, it is necessary to install an air compressor that supplies compressed air to the driving tool. The air compressor has a structure in which compressed air is generated in the compressed air generation unit by driving the motor unit, and the generated air is stored in the tank unit to provide compressed air of a predetermined pressure to the driving tool. Yes. Here, the air compressor is provided with a plug for a general outlet (AC power supply), and is supplied with driving power for driving the motor unit by connecting the plug to the outlet (for example, Patent Document 1).
JP 2006-54941 A (refer to pages 3 to 4 and FIG. 6)

  On the other hand, there are many tools that are used at work sites or the like and need to be supplied with driving power via an outlet, in addition to the air compressor. However, the total amount of power that can be used in each outlet is specified in advance, and a breaker is usually provided to temporarily cut off the power supply to the outlet when the amount of usable power is exceeded. It has been.

  When the power is cut off by the breaker, the operation of all the driving tools connected to the same outlet is stopped, so there is a high possibility that the work will be hindered. On the other hand, when many drive tools are connected to the same outlet, only a voltage value lower than the voltage value (set voltage value) required to fully function the air compressor can be You may not be able to receive supplies. When only a low voltage value can be supplied as the primary voltage in this way, drive control cannot be performed so that the function of the air compressor can be fully exhibited, and a high voltage exceeding the set voltage value cannot be achieved. When the supply of the value is received, there is a possibility that the air compressor breaks down.

  The present invention has been made in view of the above problems, and by detecting the primary voltage supplied by the drive source, it is determined whether or not the primary voltage value is a voltage value suitable for driving the motor means. It is an object of the present invention to provide an air compressor and a notification control method that can be notified to a person.

  In order to solve the above problem, in the notification control method according to the present invention, the control means for controlling the drive amount of the motor means obtains the primary voltage supplied by the drive source from the voltage detection means, and drives the motor means. The primary voltage value detected by the voltage detection means is classified with reference to a predetermined set voltage value required for the notification, and the notification means provided for performing notification is in accordance with the primary voltage value classified by the control means. And changing the notification method.

  According to the notification control method of the present invention, the control unit classifies the primary voltage value detected by the voltage detection unit with reference to the set voltage value, and the notification unit reports the notification according to the classified primary voltage value. Therefore, the operator can easily and quickly know the value of the primary voltage value by the notification method by the notification means.

  In the above-described notification control method, the primary voltage value used as a reference for starting notification by the notification unit may be different from the primary voltage value used as a reference for end of notification.

  In this way, when the primary voltage value at which the notification by the notification means is started and the primary voltage value at the end of notification are different voltage values, the primary voltage value detected after the notification is started by the voltage detection means is started to be notified. Even if the voltage fluctuates around the voltage value, the notification is continued as long as the primary voltage does not reach the voltage value at which the notification is terminated (the notification will not be terminated). The phenomenon (so-called chattering) executed in this manner can be suppressed.

  On the other hand, an air compressor according to the present invention drives compressed air generating means for generating compressed air, a tank section for storing the compressed air generated by the compressed air generating means, and the compressed air generating means. Motor means, control means for controlling the driving amount of the motor means, voltage detection means for detecting the primary voltage supplied by the drive source, and notification means for performing notification, the control means comprising: Categorizing the primary voltage value detected by the voltage detection means on the basis of a predetermined set voltage value required for driving the motor means, and the notification means according to the primary voltage value classified by the control means The notification method is changed.

  In the air compressor according to the present invention, the control means classifies the primary voltage value detected by the voltage detection means on the basis of the set voltage value, and the notification means changes the notification method according to the classified primary voltage value. Therefore, the notification method by the notification means allows the operator to easily and quickly know how much the primary voltage value is.

  In addition, the air compressor may be configured such that a primary voltage value that is a reference for start of notification by the notification unit and a primary voltage value that is a reference for end of notification are different voltage values.

  In this way, when the primary voltage value at which the notification by the notification means is started and the primary voltage value at the end of notification are different voltage values, the primary voltage value detected after the notification is started by the voltage detection means is started to be notified. Even if the voltage fluctuates around the voltage value, the notification is continued as long as the primary voltage does not reach the voltage value at which the notification is terminated (the notification will not be terminated). The phenomenon (so-called chattering) executed in this manner can be suppressed.

  Similarly, even if the primary voltage value detected after the notification is ended by the voltage detecting means fluctuates around the voltage value at which the notification is ended, if the primary voltage does not reach the voltage value at which the notification is started, the notification is ended as it is. Therefore, it is possible to suppress a phenomenon that is continuously executed while the start and end of notification are switched.

  Further, the control means stops the driving of the motor means when the voltage value difference between the set voltage value and the primary voltage value detected by the voltage detection means is equal to or greater than a predetermined voltage value. May be.

  In this way, the control means stops the driving of the motor means when the voltage value difference between the set voltage value and the detected primary voltage value is equal to or greater than the predetermined voltage value, thereby increasing the voltage value difference. The use of the air compressor can be actively stopped in the case where there is a possibility of causing a problem in the air compressor if the motor unit is continuously driven. For this reason, when the operator is unaware of the notification operation by the notification means and the primary voltage value is an abnormal value, it is possible to prevent the air compressor from being used continuously.

  Furthermore, the notification means described above may include an illumination notification means for performing the notification by at least turning on / off processing of the illumination means, and the notification means may be provided by at least sound output processing and stop processing by the sound output means. It may have a sound output notification means for performing the notification.

  In this way, when the notification means has at least the illumination notification means, it is possible to notify the operator by turning on / off the illumination, and by having at least the sound output notification means, output / stop processing of output sound This makes it possible to notify the worker.

  In particular, when the notification means includes illumination notification means and sound output notification means, when changing the notification method according to the primary voltage value classified by the control means, It becomes possible to combine with the auditory notification method by the sound output notification means. In general, auditory notification is more likely to be recognized by an operator than visual notification, so if the voltage value difference between the set voltage value and the detected primary voltage value is small, illumination When the notification process is performed using the notification means and the voltage value difference between the set voltage value and the detected primary voltage value is large, the notification method is switched from the illumination notification means to the sound output notification means, or the illumination By using the notification unit and the sound output notification unit together, it is possible to effectively perform the notification process.

  According to the air compressor and the notification control method of the present invention, the control unit classifies the primary voltage value detected by the voltage detection unit on the basis of the set voltage value, and the notification unit sets the primary voltage classified by the control unit. Since the notification method is changed according to the value, the operator can easily and quickly know the value of the primary voltage value by the notification method of the notification means.

  Hereinafter, an air compressor according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a schematic configuration of an air compressor. The air compressor 1 includes a tank unit 2, a compressed air generation unit (compressed air generation unit) 3, a motor unit (motor unit) 4, a control circuit unit (control unit) 5, and an LED notification unit (illumination notification unit, (Notification means) 6 and a buzzer notification section (sound output notification means, notification means) 7.

  The tank unit 2 has a storage tank 8 for storing compressed air. The storage tank 8 stores the compressed air having a constant pressure generated by the compressed air generator 3 and is usually maintained at a pressure of about 3.5 MPa to 4.3 MPa.

  The storage tank 8 is provided with a plurality of compressed air outlets 9. In the present embodiment, a high-pressure outlet 9a for taking out high-pressure compressed air and a normal-pressure outlet 9b for taking out normal-pressure compressed air are provided. Each of the outlets 9a and 9b is provided with pressure reducing valves 10a and 10b for reducing the compressed air obtained from the respective outlets 9a and 9b to a desired pressure. In the high pressure outlet 9a, the pressure reducing valve 10a is provided. The pressure of the compressed air taken out is reduced to about 1.5 MPa to 2.50 MPa, and the pressure of the compressed air taken out by the pressure reducing valve 10b is reduced to about 0.7 MPa to 1.5 MPa at the normal pressure outlet 9b. .

  Since the compressed air in the storage tank 8 is normally maintained at a pressure of about 3.5 MPa to 4.3 MPa as described above, the compressed air taken out from the high pressure outlet 9a and also taken out from the normal pressure outlet 9b is used. In addition, the desired pressure described above can be maintained by the pressure reducing valves 10a and 10b. In addition, an air hose (not shown) can be attached to and detached from each of the outlets 9a and 9b in order to supply the compressed air decompressed by the pressure reducing valves 10a and 10b to a driving tool such as a nail driver. Yes.

  The compressed air generating unit 3 has a structure that generates compressed air by reciprocating a piston provided in the cylinder and compressing air drawn into the cylinder from the intake valve of the cylinder. The compressed air is supplied to the storage tank 8 of the tank unit 2 through the connection pipe 14.

  The motor unit 4 has a role of generating a driving force for reciprocating the piston of the compressed air generating unit 3. The motor unit 4 is provided with a stator 16 and a rotor 17 for generating a driving force. The stator 16 is formed with U-phase, V-phase, and W-phase windings 16a, 16b, and 16c, and a rotating magnetic field is formed by passing a current through the windings 16a to 16c.

  The rotor 17 is composed of a permanent magnet, and the rotor 17 is rotated by a rotating magnetic field formed by a current flowing through the windings 16a, 16b, and 16c of the stator 16. Further, the motor unit 4 is provided with a rotation number detection unit 18 for detecting the rotation of the rotor 17. The rotation speed detection unit 18 is provided with a Hall IC, and the rotation speed of the rotor 17 is detected by detecting a change in the magnetic field in the rotor 17 using the Hall IC.

  As shown in FIG. 2, the control circuit unit 5 is roughly configured by a microprocessor (MPU: Micro Processing Unit, control means) 20, a converter circuit 21, and an inverter circuit 22.

  The converter circuit 21 is roughly constituted by a rectifier circuit (full-wave rectifier circuit) 24, a booster circuit 25, and a smoothing circuit 26, and so-called PAM (Pulse Amplitude Modulation) control is executed by the converter circuit 21. Here, the PAM control is a method of controlling the rotation speed of the motor unit 4 by changing the pulse height of the output voltage by the converter circuit 21. On the other hand, the inverter circuit 22 performs so-called PWM (Pulse Width Modulation) control. The PWM control is a method for controlling the rotation speed of the motor unit 4 by changing the pulse width of the output voltage.

  Compared with PWM control, PAM control has a characteristic that the motor unit 4 is less susceptible to lowering efficiency at low rotation and can cope with high rotation by increasing the voltage. It is a control method mainly used during operation and steady operation. On the other hand, the PWM control is a control method mainly used at the time of start-up or voltage drop. The microprocessor 20 executes control by suitably switching between PAM control by the converter circuit 21 and PWM control by the inverter circuit 22 according to the operating state of the air compressor 1.

  The rectifier circuit 24 and the smoothing circuit 26 of the converter circuit 21 have a role of converting into an AC voltage by rectifying and smoothing an AC power source 29 serving as a drive source of the air compressor 1. A switching element 25 a is provided inside the booster circuit 25, and has a role of controlling the amplitude of the DC voltage in accordance with a control command from the microprocessor 20. The booster circuit 25 is controlled via a booster controller 27 that has received a PAM command from the microprocessor 20.

  A voltage detector (voltage detector) 28 is provided between the rectifier circuit 24 and the booster circuit 25 of the converter circuit 21. The voltage value detected by the voltage detector 28 is a primary voltage value before the voltage value is boosted through the booster circuit 25 or the like, and this voltage value indicates the voltage value of the AC power supply 29. Therefore, it is possible to determine how much primary voltage is supplied from the AC power supply 29 by detecting the voltage value in the voltage detection unit 28, and the voltage value that can exhibit the function of the air compressor 1 is specified in advance. It is possible to easily determine a voltage value difference from the specified voltage value (for example, AC 100 V in the air compressor 1 according to the present embodiment). The drive voltage value detected by the voltage detection unit 28 is output to the microprocessor 20.

  The inverter circuit 22 has a function of converting the DC voltage pulse converted by the converter circuit 21 into positive and negative at regular intervals and converting the DC voltage into an AC voltage having a pseudo sine wave by converting the pulse width. doing. By adjusting the pulse width, it is possible to control the rotational speed of the motor unit 4 as described above. The microprocessor 20 controls the inverter circuit 22 by adjusting the operation amount (control amount) of the motor unit 4.

  The microprocessor 20 is a control means for stabilizing the pressure of the compressed air in the tank unit 2 to 3.5 MPa to 4.0 MPa by performing drive control of the converter circuit 21 and the inverter circuit 22. The microprocessor 20 includes a central processing unit (CPU), a RAM (Random Access Memory) used as a temporary storage area such as a work memory, a control processing program (see FIG. 3, a notification control method according to the present invention). A ROM (Read Only Memory) or the like in which the program (shown) is recorded is realized by a one-chip LSI.

  The microprocessor 20 includes a drive voltage value of the primary voltage detected by the voltage detection unit 28 as described above, and a drive rotation of the motor unit 4 (more specifically, the rotor 17) detected by the rotation number detection unit 18. A numeric value is entered. On the other hand, the microprocessor 20 is configured to be able to output control information (PAM instruction, PWM instruction) to the converter circuit 21 and the inverter circuit 22. In the converter circuit 21 and the inverter circuit 22, drive control of the motor unit 4 is executed based on the control information output by the microprocessor 20.

  The microprocessor 20 outputs a PAM command to the boost controller 27, thereby controlling the switching element 25 a of the boost circuit 25 via the boost controller 27 to control the drive of the converter circuit 21. Similarly, the microprocessor 20 controls the inverter circuit 22 by outputting a PWM command to the inverter circuit 22.

  In the microprocessor 20, when performing PAM control or PWM control, the control amounts of the converter circuit 21 and the inverter circuit 22 are determined based on the drive rotational speed of the motor unit 4 detected by the rotational speed detection unit 18.

  The LED notification unit 6 as a notification unit is provided in the casing of the air compressor 1 and includes an LED light source (illumination unit) that is installed so as to be visible with respect to the casing. The LED notification unit 6 can turn on or off the LED light source in response to a turn-on / off command from the control circuit unit 5.

  The buzzer notification unit 7 as a notification unit includes a buzzer sound output circuit (sound output unit) for outputting a buzzer sound, and is provided in the casing of the air compressor 1 in the same manner as the LED notification unit 6. Yes. The buzzer notification unit 7 can output or stop the buzzer sound according to the buzzer sound output / stop command from the control circuit unit 5.

  In the LED notification unit 6 and the buzzer notification unit 7, a turn-on / off process and a sound output / stop process are performed according to the primary voltage value detected by the voltage detection unit 28.

  For example, when the number of drive tools connected to the outlet is small and the total value of all the drive voltage values of the connected drive tools is within the allowable power amount range of the outlet, the primary voltage supplied to the air compressor 1 Can satisfy the specified voltage value (100 V in this embodiment) of the air compressor. On the other hand, when there are many drive tools connected to the outlet and the total value of all the drive voltage values of the connected drive tools exceeds the allowable power amount range of the outlet, the power is supplied to the air compressor 1. If the primary voltage is less than the specified voltage value of the air compressor 1 (100 V in the present embodiment), and only the primary voltage less than the specified voltage value can be supplied, There is a possibility that the performance of the air compressor cannot be fully exhibited.

  On the other hand, when the primary voltage supplied to the air compressor 1 becomes a value equal to or higher than the specified voltage value of the air compressor 1, the voltage is supplied exceeding the voltage value that can be assumed to drive the air compressor 1. As a result, the air compressor 1 may be defective.

  However, in general air compressors, since there is no means for confirming the voltage value of the primary voltage, the air compressor is continuously used without the operator determining whether the primary voltage is higher or lower than the specified voltage value. As a result, there is a possibility that sufficient functions cannot be exhibited or problems may occur.

  Therefore, in the air compressor 1 according to the present invention, the microprocessor 20 classifies the primary voltage based on the primary voltage value detected by the voltage detection unit 28, and the LED notification unit 6 and the buzzer according to the classified voltage value. By controlling the notification unit 7, the operator is notified of the voltage value.

  FIG. 3 is a flowchart showing a process (notification control method) in which the microprocessor 20 controls the LED notification unit 6 and the buzzer notification unit 7 based on the primary voltage detected by the voltage detection unit 28.

  First, the microprocessor 20 waits for 2 seconds (step S.1), and acquires the primary voltage value information from the voltage detector 28 when 2 seconds have elapsed (Yes in step S.1). (Step S.2). Here, the reason for waiting for 2 seconds is that a stable primary voltage is detected when the voltage value is detected after about 2 seconds since the air compressor 1 is connected to the outlet and the power is turned on. This is because it can be done. Therefore, until the time waiting process for 2 seconds is completed (in the case of No in step S.1), the microprocessor 20 executes the time waiting process (step S.1) repeatedly.

  After the time waiting process for 2 seconds is completed (Yes in step S.1) and the primary voltage value is acquired from the voltage detector 28 (step S.2), the microprocessor 20 determines that the acquired primary voltage value is It is determined whether it is 85V or more and 105V or less (step S.3).

  Here, since the primary voltage value acquired from the voltage detection unit 28 is a full-wave rectified waveform by the rectifier circuit 24, the microprocessor 20 determines the value of the primary voltage by obtaining the effective value of the acquired primary voltage. Judging.

  When the primary voltage value is 85 V or more and 105 V or less (Yes in step S.3), the microprocessor 20 outputs a turn-off command to the LED notification unit 6 and also notifies the buzzer notification unit 7 A buzzer stop command is output (step S.4). The LED notification unit 6 that has received the turn-off command executes the LED light source turn-off process according to the instruction of the microprocessor 20, and the buzzer notification unit 7 executes the buzzer sound stop process according to the instruction of the microprocessor 20.

  By this LED light source turn-off process, an initial process called LED light source turn-off process is performed when the air compressor 1 is started. During steady operation of the air compressor 1, the LED light source turn-off process causes the primary voltage value to be reduced. It is possible to notify the operator that the voltage value is acceptable (can be determined to be normal) as the voltage value necessary for driving 1.

  Similarly, by the buzzer sound stop process, an initial process called a buzzer stop process is performed when the air compressor 1 is started. During the steady operation of the air compressor 1, the primary voltage value is reduced by the buzzer sound stop process. It is possible to notify the operator that the voltage value is acceptable (can be determined to be normal) as the voltage value necessary for driving the air compressor 1.

  Step S. 3, the reason why the primary voltage value is determined based on the values of 85 V or more and 105 V or less is that the set voltage value of the air compressor 1 according to the present embodiment is 100 V. If the voltage value is in the range of −15V to + 5V (that is, 85V to 105V), the performance of the air compressor 1 can be exhibited, and further, it is determined that there is a low possibility of causing problems when the air compressor 1 is driven. Is to be able to.

  After outputting a turn-off command to the LED notification unit 6 and a buzzer stop command to the buzzer notification unit 7 (step S.4), the microprocessor 20 waits for a repetition time (step S.1). Execute.

  When the primary voltage value is 85V or higher and not 105V or lower (No in step S.3), the microprocessor 20 determines whether or not the primary voltage value is 75V or higher and 145V or lower (step S.3). 5). When the primary voltage value is 75 V or more and 145 V or less (Yes in Step S.5), the microprocessor 20 outputs a buzzer sound stop command to the buzzer notification unit 7 (Step S.6). The buzzer notification unit 7 that has received the stop command from the buzzer notification unit 7 executes a buzzer sound stop process in accordance with an instruction from the microprocessor 20.

  Step S. In the process 6, the microprocessor 20 does not output a command to turn off the LED light source to the LED notification unit 6. Step S. 5 is determined as follows: 75V ≦ primary voltage value ≦ 145V. 3 in which the condition of 85V ≦ primary voltage value ≦ 105V is not satisfied (in the case of No in step S.3). Thus, substantially step S.E. The value of the primary voltage value determined in 5 is only when 75V ≦ primary voltage value ≦ 85V or 105V ≦ primary voltage value ≦ 145V.

  For this reason, step S.E. 6, by outputting only the buzzer sound stop command to the buzzer notification unit 7 and not outputting the LED light source turn-off command to the LED notification unit 6, the operator only turns on the LED notification unit 6. When the buzzer sound of the buzzer notification unit 7 is not output, it is recognized that the primary voltage value is 75V ≦ primary voltage value ≦ 85V or 105V ≦ primary voltage value ≦ 145V. it can.

  Next, when the primary voltage value is not less than 75V and not more than 145V (No in step S.5), or the primary voltage value is not less than 75V and not more than 145V, When the sound stop process is performed (Yes in step S.5 and the process of step S.6 is executed), the microprocessor 20 determines that the primary voltage value is 80 V or less, or , 110V or higher is determined (step S.7).

  When the primary voltage value is 80 V or less or 110 V or more (Yes in Step S.7), the microprocessor 20 outputs a lighting command to the LED notification unit 6 (Step S.8). The LED notification unit 6 that has received the lighting command executes the LED light source lighting process in accordance with the instruction from the microprocessor 20. By the lighting process of the LED notification unit 6, the microprocessor 20 can warn the worker by the light emission of the LED light source.

  Next, when the primary voltage value is not 80V or less or 110V or more (in the case of No in step S.7), or the primary voltage value is 80V or more or 110V or less, When the LED light source lighting process is performed (Yes in step S.7 and the process of step S.8 is executed), the microprocessor 20 determines whether the primary voltage value is 70 V or less. Or it is judged whether it is 150V or more (step S.9).

  When the primary voltage value is 70 V or less or 150 V or more (Yes in step S.9), the microprocessor 20 outputs a buzzer sound output command to the buzzer notification unit 7 ( In step S.10), the buzzer notifying unit 7 that has received the sound output command executes the sound output process of the buzzer sound according to the instruction of the microprocessor 20. By the lighting process of the buzzer notification unit 7, the microprocessor 20 can warn the worker by outputting a buzzer sound.

  Step S. 9, when the primary voltage satisfies the condition of the primary voltage value ≦ 70 V or the primary voltage value ≧ 150 V, step S. 7 satisfies the condition of primary voltage value ≦ 80V or primary voltage value ≧ 110V, which is the judgment value of the primary voltage in FIG. For this reason, whenever a buzzer sound output command is output to the buzzer notification unit 7 (Yes in step S.9 and the process of step S.10 is executed), the buzzer sound output unit 7 is always executed. Then, a lighting command is output to the LED notification unit 6 (Yes in step S.7, and the process of step S.8 is executed).

  When the operator only turns on the LED notification unit 6 and the buzzer notification unit 7 does not emit a buzzer sound, the value of the primary voltage is close to the set voltage value. When both the lighting of the LED notification unit 6 and the output of the buzzer sound by the buzzer notification unit 7 are performed, the value of the primary voltage is set as compared with the case where only the lighting of the LED notification unit 6 is performed. A value lower than the voltage value or a higher value is indicated, and it can be determined that it is not preferable to continue driving the air compressor 1.

  Also, a voltage value difference of 5V is provided between the primary voltage value condition for outputting the LED light source turn-on command from the microprocessor 20 to the LED notification unit 6 and the primary voltage value condition for outputting the turn-off command. Yes. For example, one condition is that the primary voltage value at which the LED light source lighting command is output to the LED notification unit 6 is 80 V or less (step S.7). The primary voltage value at which the light source turn-off command is output is 85 V or more (step S.3), and a difference of 5 V is secured as the voltage value difference.

  In this way, by providing a voltage value difference between the lighting condition and the extinction condition of the LED notification unit 6, the LED light source of the LED notification unit 6 is continuously turned on and off with a slight change in the detected primary voltage value. Switching (so-called chattering) can be prevented. In addition, a voltage value difference of 5 V is also present between the primary voltage value condition for outputting a buzzer sound output command from the microprocessor 20 to the buzzer notification unit 7 and the primary voltage value condition for outputting a stop command. Is provided. Therefore, chattering in the buzzer sound output / stop process can be prevented.

  Subsequently, the microprocessor 20 determines whether or not the primary voltage value is 50 V or less or 150 V or more and the driving operation of the motor unit 4 is being performed (step S.11). When the primary voltage value is 50 V or less or 150 V or more and the driving operation of the motor unit 4 is performed (Yes in step S.11), the voltage value supplied from the AC power supply 29 is Therefore, it can be determined that the performance of the air compressor 1 cannot be sufficiently exhibited and it is difficult to drive the air compressor 1 safely. Therefore, the microprocessor 20 outputs a control command for stopping the driving of the motor unit 4 to the inverter circuit 22 and the converter circuit 21 (step S.12). The inverter circuit 22 and the converter circuit 21 that have received the control command from the microprocessor 20 perform stop control of the motor unit 4 in accordance with the control command.

  In this way, when the voltage value supplied from the AC power supply 29 is a value that is significantly higher or lower than the specified voltage value of the air compressor 1, the microprocessor 20 drives the motor unit 4. By forcibly stopping it, it is possible to avoid problems and troubles that may occur in the air compressor 1 and the like in advance.

  On the other hand, when the condition that “the primary voltage value is 50 V or less or 150 V or more and the driving operation of the motor unit 4 is performed” is not satisfied (in the case of No in step S.11), for example, If the primary voltage value is not 50 V or less or 150 V or more, or if the primary voltage value is 50 V or less or 150 V or more and the driving operation of the motor unit 4 is not performed, the process is performed in step S. . The process proceeds to the time waiting process 1 and the above-described process is repeatedly executed.

  As described above, in the air compressor 1 according to the present embodiment, the primary voltage value supplied from the AC power supply 29 is detected, and the LED notification unit 6 turns on and off the LED light source according to the detected primary voltage value. Since the buzzer sound output / stop processing is performed by the buzzer notification unit 7, the operator performs the primary voltage of the AC power source 29 based on the light-off state of the LED light source and the buzzer sound by the buzzer notification unit 7. It is possible to determine whether or not the value is a voltage value suitable for driving the air compressor 1.

In particular, in the air compressor 1 according to the present embodiment, as the voltage value difference between the primary voltage value and the specified voltage value increases,
(1) From the state without notification by the LED notification unit 6 and the buzzer notification unit 7,
(2) State in which notification by turning on LED light source by LED notification unit 6 (no notification by buzzer notification unit 7) is performed (3) Notification by LED light source by LED notification unit 6 and buzzer sound by buzzer notification unit 7 (4) In addition to the notification by the LED notification unit 6 and the notification by the buzzer notification unit 7, a multi-step notification of a state in which the drive stop process of the motor unit 4 is performed is used. Thus, the operator can be notified of the state of the primary voltage, so that the operator can quickly and reliably grasp the state of the primary voltage based on these notification states.

  For this reason, the operator can take various countermeasures according to the notification state. For example, when only the notification by the LED notification unit 6 is performed, some driving tools connected to the outlet When the two notifications of the LED notification unit 6 and the buzzer notification unit 7 are both performed, all other driving tools connected to the outlet are disconnected from the outlet, or the air compressor 1 It is possible to try replacing the outlet connected to the other outlet.

  The numerical conditions for the primary voltage value shown in the embodiment are merely examples, and the present invention is not limited to this. For example, a numerical value as a condition may be set from a range of ± 15V with respect to the set value 100V.

  Although the air compressor and the notification control method according to the present invention have been described in detail with reference to the drawings, the air compressor and the notification control method according to the present invention are not limited to those described above. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention.

  For example, in the above-described embodiment, the buzzer notification unit 7 that outputs a buzzer sound in order to notify the operator of the state of the primary voltage value has been described. For example, music may be generated instead of a buzzer sound, or a voice of a human may be uttered, "Please note that the primary voltage value is low (high)."

  Further, the notification to the worker by the LED notification unit 6 may be not only the LED light source is simply turned on / off, but also the LED light source that is turned on according to the primary voltage value.

  Further, in the above-described embodiment, the case where the notification control method according to the present invention is used for the air compressor 1 has been described. However, the notification control method according to the present invention is not necessarily provided by the notification means provided in the air compressor 1. The present invention is not limited to this control, and can be used for controlling the notification means in other products.

It is a block diagram which shows schematic structure of the air compressor which concerns on embodiment. It is a block diagram which shows the control circuit part of the air compressor which concerns on embodiment. It is the flowchart which showed the processing content (notification control method) of the microprocessor which concerns on embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Air compressor 2 ... Tank part 3 ... Compressed air production | generation part (compressed air production | generation means)
4 ... Motor part (motor means)
5 ... Control circuit section (control means)
6 ... LED notification part (notification means, illumination notification means)
7: Buzzer notification section (notification means, sound output notification means)
8 ... Reservoir tank 9 (of tank part) ... Compressed air outlet 9a ... High pressure outlet 9b (of compressed air outlet) ... Normal pressure outlet 10a, 10b (of compressed air outlet) ... Pressure reducing valve 14 ... Connection pipe 16 (stator) 16a, 16b, 16c (stator) winding 17 ... rotor 18 ... (motor part) rotational speed detection unit 20 ... microprocessor (control means)
DESCRIPTION OF SYMBOLS 21 ... Converter circuit 22 ... Inverter circuit 24 ... (Converter circuit) Rectifier circuit 25 ... (Converter circuit) Boost circuit 25a ... (Boost circuit) Switching element 26 ... (Converter circuit) Smoothing circuit 27 ... Boost controller 28 ... Voltage detector (voltage detection means)
29… AC power supply

Claims (6)

Control means for controlling the drive amount of the motor means,
Obtaining the primary voltage supplied by the drive source from the voltage detection means;
Classifying the primary voltage value detected by the voltage detection means with reference to a predetermined set voltage value required for driving the motor means;
An informing means provided for informing,
Change the notification method according to the primary voltage value classified by the control means ,
A notification control method characterized in that a primary voltage value used as a reference for notification start in the notification means and a primary voltage value used as a reference for notification end are different voltage values . Compressed air generating means for generating compressed air;
A tank section for storing the compressed air generated by the compressed air generating means;
Motor means for driving the compressed air generating means;
Control means for controlling the drive amount of the motor means;
Voltage detection means for detecting a primary voltage supplied by the drive source;
A notification means for performing notification,
The control means classifies the primary voltage values detected by the voltage detection means with reference to a predetermined set voltage value required for driving the motor means,
The notification means changes the notification method according to the primary voltage values classified by the control means ,
An air compressor characterized in that a primary voltage value used as a reference for start of notification by the notification means and a primary voltage value used as a reference for end of notification are different voltage values . The control means stops driving of the motor means when a voltage value difference between the set voltage value and a primary voltage value detected by the voltage detection means is equal to or greater than a predetermined voltage value. The air compressor according to claim 2 . 4. The air compressor according to claim 2 , wherein the notification unit includes an illumination notification unit that performs the notification by at least turning on / off processing of the illumination unit. 5. The notification means, the air compressor according to any one of claims 2 to 4, characterized in that it has a sound output notification means for performing the notification by sound output process and stop process according to at least the sound output means. The notification means includes
Illumination notification means for performing the notification by at least turning on / off processing of the illumination means;
Sound output notification means for performing the notification by at least sound output processing and stop processing by the sound output means;
Have
The classification of the primary voltage value is classified into three in a range where a voltage value difference between the set voltage value and the primary voltage value detected by the voltage detecting means is equal to or less than the predetermined voltage value,
The notification means includes
When the primary voltage value falls within the range of the classification with the smallest voltage value difference, the lighting processing by the lighting notification means and the sound output processing by the sound notification means are not started,
When the primary voltage value falls within the range of the second smallest voltage value difference, only the lighting process by the illumination notification unit is started, and the sound output process by the sound notification unit is started. Without
When the primary voltage value falls within the range of the classification having the largest voltage value difference,
In addition to the lighting process by the illumination notification means, the sound output process by the sound notification means is started.
The air compressor according to claim 2 or claim 3, wherein

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